1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_URL_FETCHER_H_
6 #define COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_URL_FETCHER_H_
8 #include "base/callback.h"
9 #include "base/memory/scoped_ptr.h"
10 #include "net/url_request/url_fetcher_delegate.h"
15 // Downloads raw Translate data such as the Translate script and the language
17 class TranslateURLFetcher
: public net::URLFetcherDelegate
{
19 // Callback type for Request().
20 typedef base::Callback
<void(int, bool, const std::string
&)> Callback
;
22 // Represents internal state if the fetch is completed successfully.
24 IDLE
, // No fetch request was issued.
25 REQUESTING
, // A fetch request was issued, but not finished yet.
26 COMPLETED
, // The last fetch request was finished successfully.
27 FAILED
, // The last fetch request was finished with a failure.
30 explicit TranslateURLFetcher(int id
);
31 ~TranslateURLFetcher() override
;
33 int max_retry_on_5xx() {
34 return max_retry_on_5xx_
;
36 void set_max_retry_on_5xx(int count
) {
37 max_retry_on_5xx_
= count
;
40 const std::string
& extra_request_header() {
41 return extra_request_header_
;
43 void set_extra_request_header(const std::string
& header
) {
44 extra_request_header_
= header
;
47 // Requests to |url|. |callback| will be invoked when the function returns
48 // true, and the request is finished asynchronously.
49 // Returns false if the previous request is not finished, or the request
50 // is omitted due to retry limitation.
51 bool Request(const GURL
& url
, const Callback
& callback
);
53 // Gets internal state.
54 State
state() { return state_
; }
56 // net::URLFetcherDelegate implementation:
57 void OnURLFetchComplete(const net::URLFetcher
* source
) override
;
60 // URL to send the request.
63 // ID which is assigned to the URLFetcher.
69 // URLFetcher instance.
70 scoped_ptr
<net::URLFetcher
> fetcher_
;
72 // Callback passed at Request(). It will be invoked when an asynchronous
73 // fetch operation is finished.
76 // Counts how many times did it try to fetch the language list.
79 // Max number how many times to retry on the server error
80 int max_retry_on_5xx_
;
82 // An extra HTTP request header
83 std::string extra_request_header_
;
85 DISALLOW_COPY_AND_ASSIGN(TranslateURLFetcher
);
88 } // namespace translate
90 #endif // COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_URL_FETCHER_H_